Reduction in dose of chemical fertilizers and growth enhancement of sesame (Sesamum indicum L.) with application of rhizospheric competent Pseudomonas aeruginosa LES4

Biotic Interactions in the Rhizosphere: A Diverse Cooperative Enterprise for Plant Productivity

“…It is known that several rhizobacteria species increase root biomass by changing the auxin balance and, in consequence, the signaling process, by either producing and secreting the auxin themselves (Dobbelaere et al, 1999;Patten and Glick, 2002;Idris et al, 2007) or changing its homeostasis inside plant cells (Spaepen et al, 2007;Kurepin et al, 2014). The same positive effect of bacterial IAA has been observed in tomato (Pastor et al, 2014), sesame (Sesamum indicum; Kumar et al, 2009), maize (Fallik et al, 1989), wheat (Egamberdieva, 2009), and other crops.…”

The persistence and performance of phosphate-solubilizing Gluconacetobacter liquefaciens qzr14 in a cucumber soil

“…The application of plant growth-promoting microorganisms (PGPMs) has been considered as a highly attractive agricultural method, because it substantially reduces the use of chemical fertilizers and pesticides (Baris et al 2014;Kumar et al 2009;Sathya et al 2016). PGPMs promote plant growth by (i) supplying nutrients (such as nitrogenfixing bacteria and phosphate-solubilizing bacteria); (ii) producing plant hormones (such as Bradyrhizobium spp.…”

Functional Aspect of Phosphate-Solubilizing Bacteria: Importance in Crop Production

“…In this context, it is speculated that low fertilizer application causes reduction in the ACC deaminase activity of PS strains and thereby leads to reduction in the synthesis of stress (nutrient)-induced inhibitory levels of ethylene in the roots through ACC hydrolysis into NH 3 and α-ketobutyrate. Based on this finding, the study suggested that Pseudomonads could be used in combination with appropriate doses of fertilizers for better plant growth and savings of fertilizers (Shaharoona et al 2008) as also observed by Kumar et al (2009) and Maheshwari et al (2011). Such increase in cereal production following PSB such as P. fluorescens 153, P. fluorescens 169, P. putida 4, and P. putida 108 application has been attributed to both PSA of PSB and their ability to synthesize growth-promoting substances (such as ACC deaminase and IAA-like products) in natural soil ecosystem (Zabihi et al 2011).…”

“…Moreover, of the varying treatments, mixed bacterial cultures showed better efficiency than the individual ones suggesting that there is no reason to doubt why application of PGPR with N fertilizer cannot increase N contents and N uptake by plants. Also, application of PGPR even with low fertilizer rates could be a more viable option for achieving optimum benefits while reducing the dependence on chemical inputs (Kumar et al 2009). An interactive and positive effect of PSB, N 2 fixer, and AM fungi on plant vigor, nutrient uptake, and yield in wheat plants was observed following composite application of Pseudomonas striata + Azotobacter chroococcum + Glomus fasciculatum.…”